looking for an upgrade

Hey guys, been vaping for a couple years and have been using my current setup for quite sometime. Im using the Sigelei 150w box mod with my kangertech subtank mini, I'm noticing my tank has been leaking more and more as well as flavor deteriorating.

I'm looking for a replacement and possibly any upgrade but have not kept up with the tech for sometime, wondering if you guys can recommend me something?

thanks